Added support for logging in

For the moment this does more or less nothing
Using requests instead of urllib2.

Also if you are logged in your user cookie will be sent with the request (going to be used for upvoting and similar features later)
Moved "Shown HN" link
Handling of dead links and comments
Formatting
Proper support for dead comments
Updated requirements
Formatting
Using GlobalRequestMiddlewareException instead of adding request to all needed functions (got messy fast)
Merge branch 'master' into login
Changed to class based views for login and logout
Handle scraping of own userinfo while logged in
Removed unused references and formatting
Trying to show dead comments
Rebuild after scraping
Merge branch 'master' into login

Changed from MPTT to Treebeard(adjacency list) for now to fix sorting issues
Dropped django-treebeard
Added dead field to json. Fixed get_children
Small code cleanup
Refactor